Hi Alex,

On 3/17/21 11:18 PM, Alex Williamson wrote:
          {MAP,   0x0, 0xc0000000}, --------------------------------- (b)
                  use GDB to pause at here, and then DMA read IOVA=0,
IOVA 0 seems to be a special one. Have you verified with other addresses
than IOVA 0?
It is???  That would be a problem.


No problem from hardware point of view as far as I can see. Just
thought about software might handle it specially.

Best regards,
baolu
  • A problem of I... Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
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